Drag-saw.



'fw'.'gB-.j RIDDER.

DRAG SAW. A APPLICATION FIIDED QCT. 4, 1902-. A

- UNITED STATES Patented September 22, 1903'. i

PATENT OFFICE.

WELLINGTON PARKER KIDDER, OF BOSTON, MASSACHUSETTS, ASSIGNOR To FRANK H. GOODYEAR AND GEORGE E. MATTHEWS, TRUSTEES, OF

BOSTON, MASSACHUSETTS.

u DRAG-SAW.

SPECIFICATION forming part ef Lettere Patent Ne. 7e9,49e, dated september 22, 1903. Application tiled October 4,1902. `Serial No. 126,001. (No model.)

To aLl whom it may concern.-

Be it known thatl, WELLINGTON PARKER KIDDER, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Drag- Saws, of which the following is a specification, reference being .had therein to the accompanying drawings- Figure 1 is a plan View ot my new drag` saw applied to a tree-trunk, shown in crosssection. Fig. 2 is a detailed view showing various parts in a different position from the handle and pneumatic chamber; 2, the lonl gitudinally-reciprocating piston; 3, the saw,

and 4 the air-inlet of an ordinary and wellknown pneumatic saw.

In accordance with my invention Iinclose the handlel in a bracket 5, which is pivoted at 6 to a part to be described. Bracket 5,

3o which encircles the handle 1 and .through which the handle may be moved lengthwise,

so as to adjust the pneumatic saw in the bracket, is provided with a set-screw or other clamping device 7, whereby the saw-handle 3 5 may be locked in any desired positionv be-A tween its ends in said bracket. Thatpart 8 to which the bracket 5 is pivoted may be called a tree-engaging dog and is formed with points 9, which may be driveninto the 4o trunk. The opposite ends of the dog are secured by a chain 10,which', with the dog, encirv cles the tree-trunk. The connections between the dog and chain 10 are preferably as shownthat is, one end of the dog is provided with anl Orifice through which the threaded shank 11 of a hook passes to receive the adj usting-nut 12.

The other end portion of the dog supportsa link 13, which is pivoted at one end 14 to the dog. To the other or outer end of the link 13 is pivoted at 15 in an open slot of link 13 5o another link 16, to one end of which chain 10 is secured. By moving the outer end of the link' 13 inwardly toward-the trunk that end of the link 16 which' is pivoted to the link 13.

is moved nearer the tree-trunk, so 'that the 55 chain 10 is tightened thereon, and further tighteningl of the chain may be effected by j turninglthe nut 12. A handle-lever 17 is pivoted at 18 on the dog 8 and is provided with a `cam-shaped end 19, which when the outer 6o end'of the handleflever 17 is moved outwardly strikes against the outer end of the link 13 and so loosens up the'chain.

2O is anhandle connected with the dog 8 for easier manipulation of the dog. The open slot referred to in the outer end of link 13 is marked 21. .Its purpose is to eifectv the ready disconnection of the link 16 from the-link 13,- so that link 16 and chain 10 may be released from the trunk and the apparatus removed. 7o' I It will be observed from Fig. 1 that the saw 3 is above the handle 17, the dog 8, and chain 10, so that the apparatus lis held as fixed on what ultimately becomes the stump. It will also be seenthat an outward pull on the handle 17 will cause the cam 19 to straighten out the coperating links 13 and 16 by moving the outer end of the link 13 outwardly, and thereby carrying the outer end of the link 16 away from the tree-trunk. At a certain time 8o in this movement the open slot 21 discharges the pivot-pin 15 ofthe link 16, as issufticiently shown in Fig. 2. The outward pull on the outer end ofthe handle 17 automatically uncouples the link mechanism 13v and 16. By 8 5 this construction the drag-saw may be very quickly applied and disengaged.

1. The combination of a tree engaging bracket With a chain connected, at one end, 9o to thebracket, and provided, at its other end,

with al link; another link pivoted on said bracket; ahandle having a cam and pivoted on said bracket; said links being formed with a detachable connection.

2. The combination of a tree engaging 5 bracket with a chain connected, at one end, to the bracket, and provided, at its other end, with a link; another link pivoted on said bracket; a handle having a cam and pivoted on said bracket; said links being formed with a detachable connection; and said bracket 1d having an arm provided with a saw-holding bracket pivoted thereon.`

In testimony whereof I afx my signature in presence of two Witnesses.

WELLINGTON PARKER KIDDER. Witnesses:

E. A. ALLEN, M. E. CovENEY. 

